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Slow Cooker Flank Steak is a delicious weeknight meal idea. The flank steak cooks tender and juicy in a simple ingredient sauce.

Cooked Flank Steak sliced in the slow cooker topped with fresh cilantro
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Flank steak is one of my favorite cuts of beef to cook. We usually like to grill it but cooking in the slow cooker still results in tender and juicy steak.

If you are looking for an easy way to cook flank steak, make it in the slow cooker. You will love the way it taste and how easy it is to make in this slow cooker recipe. Try these other flank steak recipes – Steak Kabobs Recipe, Grilled Teriyaki Steak and Easy Instant pot Steak and Potatoes.

Why This Recipe Works

This flank steak recipe takes minutes to prepare and cooks easily in the slow cooker. The spice mixture is simple which gives the steak so much flavor making this a family favorite.

Serve this dish for an easy weeknight meal or to feed a crowd. The flank steak cooks so tender and moist.

Ingredients

Ingredients - Flank Steak, beef broth, soy sauce, Worcestershire Sauce, olive oil, brown sugar, garlic, onion powder, smoked paprika, salt, pepper

Scroll to the bottom for the full recipe and ingredients in the recipe card.

Seasoning Ideas

Feel free to change the spices or add in spices to what you prefer. Here are some delicious additions.

How to Make Flank Steak in the Slow Cooker

Combining the sauce ingredients in a bowl with a whisk

Step 1 – In a small bowl, whisk together the beef broth, soy sauce, Worcestershire sauce, olive oil, brown sugar, minced garlic, onion powder, smoked paprika, salt, and pepper to create the marinade.

Flank steak in the slow cooker topped with the sauce ingredients

Step 2 – Place the flank steak in the slow cooker. Pour the marinade over the flank steak, making sure it’s evenly coated.

Cooked flank steak in sauce mixture in the slow cooker

Step 3 – Cover the slow cooker and cook on low for 6-8 hours, until the flank steak is tender.

Sliced Cooked Flank Steak on a cutting board with a knife

Step 4 – Once done, remove the flank steak from the slow cooker and let it rest on a cutting board for 5-10 minutes. Slice the flank steak against the grain into thin strips.

Expert Tips

  • Cook on High – If you prefer, you can cook on HIGH for 3-4 hours, but the meat won’t be as tender.
  • Sauce – If you want a thicker sauce, just create a slurry. Remove the flank steak from the slow cooker once it’s done cooking, and then whisk together 2 tablespoons of cornstarch with 2 tablespoons of cold water. Stir this mixture into the slow cooker and cook on high for an additional 15-20 minutes, or until the sauce has thickened.
  • Cutting Flank Steak – After the flank steak has rested, cut the lean cut of beef with a sharp knife on a cutting board against the grain. We like to slice in thin strips to easily serve.
Slice Flank Steak on a plate with mashed potatoes

Serving Suggestions

We usually serve flank steak in Instant Pot Steak Fajitas Recipe, Crock Pot Steak Tacos or Slow Cooker Steak Fajitas with Cauliflower Rice Recipe.

It is delicious topped with fresh cilantro, lime juice, Easy Guacamole Recipe with Salsa, cheese in a Homemade Flour Tortilla Recipe. This Flank Steak can also be served with Homemade Mashed Potatoes, Parmesan Roasted Broccoli and Green Beans with Bacon Recipe for another complete meal idea. We even like making Slow Cooker Scalloped Potatoes Recipe.

Frequently Asked Questions

How Long to Cook Flank Steak to Make Tender?

We recommend cooking flank steak on low for about 6 hours for the best tender and flavorful steak.

Can I Add Vegetables to the Slow Cooker with the Flank Steak?

Yes, you can make crock pot flank steak with veggies. Feel free to add in diced potatoes, broccoli or corn on the cob. You can even add in carrots or bell peppers for the best addition.

Will my Flank Steak Get Dry in the Slow Cooker?

Cooking the flank steak in the sauce keeps the flank tender and moist.

How to Store Leftover Flank Steak

Store leftovers in the refrigerator in an airtight container for up to 5 days.

Sliced Flank steak in the slow cooker topped with cilantro

More Easy Crock Pot Steak Recipes

If you make Slow Cooker Flank Steak Recipe, please leave us a comment or a star review. We love to hear from you.

Slow Cooker Flank Steak

5 from 1 vote
Slow Cooker Flank Steak is a delicious weeknight meal idea. The flank steak cooks tender and juicy in a simple ingredient sauce.
Prep Time 10 minutes
Cook Time 6 hours
Total Time 6 hours 10 minutes
Servings 6
Cuisine American
Course Main Course
Calories 285

Ingredients

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Instructions

  • In a small bowl, whisk together the beef broth, soy sauce, Worcestershire sauce, olive oil, brown sugar, minced garlic, onion powder, smoked paprika, salt, and pepper to create the marinade.
  • Place the flank steak in the slow cooker.
  • Pour the marinade over the flank steak, making sure it’s evenly coated.
  • Cover the slow cooker and cook on low for 6-8 hours, until the flank steak is tender.
  • Once done, remove the flank steak from the slow cooker and let it rest on a cutting board for 5-10 minutes.
  • Slice the flank steak against the grain into thin strips.

Recipe Notes

If you prefer, you can cook on HIGH for 3-4 hours, but the meat won’t be as tender.
If you want a thicker sauce, just create a slurry: Remove the flank steak from the slow cooker once it’s done cooking, and then whisk together 2 tablespoons of cornstarch with 2 tablespoons of cold water. Stir this mixture into the slow cooker and cook on high for an additional 15-20 minutes, or until the sauce has thickened.
Refrigerate any leftovers in an airtight container for up to 5 days.

Nutrition Facts

Calories 285kcal, Carbohydrates 8g, Protein 34g, Fat 12g, Saturated Fat 4g, Polyunsaturated Fat 1g, Monounsaturated Fat 6g, Cholesterol 91mg, Sodium 1039mg, Potassium 665mg, Fiber 0.3g, Sugar 5g, Vitamin A 174IU, Vitamin C 2mg, Calcium 57mg, Iron 3mg

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About the Author

Hi, I’m Carrie. Welcome to Eating on a Dime!

I’m on a mission to help you cook delicious meals without busting your budget. Together we are going to cook real food… for real families!

5 from 1 vote

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  1. Casey says:

    5 stars
    The flank steak came out so tender and juicy!